1993, Number 4
Vet Mex 1993; 24 (4)
Lozano CB, Márquez OMC, Márquez OA, Pérez VJE
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Text ExtractionChromosome aberrations cause phenotypic anomalies and reproductive malfunctions. The aim of this study was to identify the Robertsonian 1/29 translocation in Brown Swiss cattle and its effects on reproductive performance. Fifty five cows were sampled at random; 0.5 ml blood samples were collected from each cow. Karyotypes and chromosome G -banding were done. Forty nine cows showed no chromosome aberration. These animals averaged 1.9 ± 1.4 compared to 3.2 ± 1.7 inseminations per partum in cows that showed the aberration. The difference may be accounted to embryo deaths due to monosomy or trisomy.